Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells in an effort to produce energy, maintain life, or stimulate growth.
Historically, people secured food through two methods: hunting and gathering, and agriculture. Today, most of the food energy consumed by the world population is supplied by the food industry.
Breakfast is the first meal taken after rising from a night's sleep, most often eaten in the early morning before undertaking the day's work. Among English speakers, "breakfast" can be used to refer to this meal or to refer to a meal composed of traditional breakfast foods (such as eggs, oatmeal and sausage) served at any time of day. The word literally refers to breaking the fasting period of the prior night.
Breakfast foods vary widely from place to place, but often include a carbohydrate such as grains or cereals, fruit and/or vegetables, a protein food such as eggs, meat or fish, and a beverage such as tea, coffee, milk or fruit juice. Coffee, milk, tea, juice, breakfast cereals, pancakes, sausages, French toast, bacon, sweet breads, fresh fruit, vegetables, eggs, mushrooms, baked beans, muffins, crumpets and toast with butter or margarine and/or jam or marmalade are common examples of breakfast foods, though a large range of preparations and ingredients are associated with breakfast globally.
Diet food (or dietetic food) refers to any food or drink whose recipe has been altered in some way to make it part of a body modification diet. Such foods are usually intended to assist in weight loss or a change in body type, although bodybuilding supplements are designed to aid in gaining weight or muscle.
In addition to diet other words or phrases are used to identify and describe these foods including light, zero calorie, low calorie, low fat, no fat and sugar free. In some areas use of these terms may be regulated by law. For example in the U.S. a product labeled as "low fat" must not contain more than 3 grams of fat per serving; and to be labeled "fat free" it must contain less than 0.5 grams of fat per serving.